[INFO] cloning repository https://github.com/sticnarf/tcping-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sticnarf/tcping-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsticnarf%2Ftcping-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsticnarf%2Ftcping-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cc71869b09a6f11bbd89f8e6d7058db6a793b5af
[INFO] testing sticnarf/tcping-rs against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsticnarf%2Ftcping-rs" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sticnarf/tcping-rs on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sticnarf/tcping-rs
[INFO] finished tweaking git repo https://github.com/sticnarf/tcping-rs
[INFO] tweaked toml for git repo https://github.com/sticnarf/tcping-rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/sticnarf/tcping-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16c1d141ec9de39c81166c0d78797fcae6fc639e11c45d123885eca61481343b
[INFO] running `Command { std: "docker" "start" "-a" "16c1d141ec9de39c81166c0d78797fcae6fc639e11c45d123885eca61481343b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16c1d141ec9de39c81166c0d78797fcae6fc639e11c45d123885eca61481343b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16c1d141ec9de39c81166c0d78797fcae6fc639e11c45d123885eca61481343b", kill_on_drop: false }`
[INFO] [stdout] 16c1d141ec9de39c81166c0d78797fcae6fc639e11c45d123885eca61481343b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 973f551a5157f273ffee4c8989f870d8d15ae5cc0976d3f43d768253d6122afe
[INFO] running `Command { std: "docker" "start" "-a" "973f551a5157f273ffee4c8989f870d8d15ae5cc0976d3f43d768253d6122afe", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling libc v0.2.33
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling vec_map v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling ansi_term v0.10.2
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling atty v0.2.3
[INFO] [stderr]    Compiling clap v2.27.1
[INFO] [stderr]    Compiling tcping v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]  --> src/main.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{Read, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |         Ok(mut addrs) => addrs.filter(|addr| addr.is_ipv4()).next().unwrap(),
[INFO] [stdout]    |            ----^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.70s
[INFO] running `Command { std: "docker" "inspect" "973f551a5157f273ffee4c8989f870d8d15ae5cc0976d3f43d768253d6122afe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "973f551a5157f273ffee4c8989f870d8d15ae5cc0976d3f43d768253d6122afe", kill_on_drop: false }`
[INFO] [stdout] 973f551a5157f273ffee4c8989f870d8d15ae5cc0976d3f43d768253d6122afe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79724b06f5594670e1c33defda6de8448a3a35bf66b3b9aefedbca3d2aaf1baa
[INFO] running `Command { std: "docker" "start" "-a" "79724b06f5594670e1c33defda6de8448a3a35bf66b3b9aefedbca3d2aaf1baa", kill_on_drop: false }`
[INFO] [stderr]    Compiling tcping v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]  --> src/main.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{Read, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |         Ok(mut addrs) => addrs.filter(|addr| addr.is_ipv4()).next().unwrap(),
[INFO] [stdout]    |            ----^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "79724b06f5594670e1c33defda6de8448a3a35bf66b3b9aefedbca3d2aaf1baa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79724b06f5594670e1c33defda6de8448a3a35bf66b3b9aefedbca3d2aaf1baa", kill_on_drop: false }`
[INFO] [stdout] 79724b06f5594670e1c33defda6de8448a3a35bf66b3b9aefedbca3d2aaf1baa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0e4d138441fc8d85311056c8436ecdd6c87b4caf28482816ec342ac922268b6e
[INFO] running `Command { std: "docker" "start" "-a" "0e4d138441fc8d85311056c8436ecdd6c87b4caf28482816ec342ac922268b6e", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Read`, `Write`
[INFO] [stderr]  --> src/main.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::{Read, Write};
[INFO] [stderr]   |               ^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:45:12
[INFO] [stderr]    |
[INFO] [stderr] 45 |         Ok(mut addrs) => addrs.filter(|addr| addr.is_ipv4()).next().unwrap(),
[INFO] [stderr]    |            ----^^^^^
[INFO] [stderr]    |            |
[INFO] [stderr]    |            help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tcping-5241f5db00fc71a0)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0e4d138441fc8d85311056c8436ecdd6c87b4caf28482816ec342ac922268b6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e4d138441fc8d85311056c8436ecdd6c87b4caf28482816ec342ac922268b6e", kill_on_drop: false }`
[INFO] [stdout] 0e4d138441fc8d85311056c8436ecdd6c87b4caf28482816ec342ac922268b6e